they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

electrical impulses

telegraph

hormonal

proteins

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

1 month

1 year

10 years

100 years

wire

the brain

nerve

muscle

muscle cells

stem cells

liver cells

skin cells

stem cells

muscle cells

glial cells

prison cells

a nerve

all of the above

brains

spinal cord

1 meter per second

1 foot per second

150 meters per second

100 miles per hour